The Nature of Science

How many independent variables should be tested at a time in a scientific investigation?

• none

• one

• two

• three

In the paper airplane experiment, changing the size of the airplane would be which variable?

• Dependent

• Independent

• Control

• Conclusion

How would you collect data about the stars?

• Make a bar graph

• Read about the stars

• Ask a friend what they think

• Draw what you see

The container is filled to the 350 mL mark with water.

• Observation

• Inference

• Problem

• Hypothesis

The variable in the experiment that is the outcome that you measure is called:

• Control

• Dependent

• Independent

• Hypothesis

Which is the dependent variable in Amelia's experiment?

• the number of bean plants in each group

• the amount of water given daily to each plant

• the height of each bean plant

• the amount of fertilizer given to each group of bean plants

Which question can best be investigated by a scientist?

• Should I buy a red shirt or a green shirt?

• Does chocolate milk or plain milk taste better?

• Does a plant need sunlight to grow?

• Which feels softer, cat fur or dog fur?

Which of the following is a scientific observation?

• The potato is brown in color.

• The potato tastes the best.

• The potato may cause allergies.

• The potato smells funny.

What is another word for hypothesis?

• evidence

• graph

• investigation

• prediction

Mr. McNeice wanted to know if different types of music affected people's heart rates, so he played different music and checked their pulses. What is the dependent variable?

• type of music

• heart rate

• how long they listened to music

• Mr. McNeice